Apple is set to launch iOS 4.2.6 for Verizon’s CDMA iPhone 4 on February 10, but a 4.3 update may be made available just days later, bringing Personal Hotspot WiFi sharing to AT&T users.

Per AppleInsider, David Pogue of the New York Times noted that the new Personal Hotspot feature would come to existing AT&T iPhone users on February 13, a date that no longer appears in his review.

The reader said that Pogue’s review originally stated, “the single new feature in Verizon’s iPhone is Personal Hotspot, where the iPhone becomes a Wi-Fi base station. Up to five laptops, iPod Touches or other gadgets can get online, using the phone as a glorified Internet antenna.

“That’s incredibly convenient. Many other app phones have it — AT&T’s iPhone gets it on Feb. 13 — but Apple’s execution is especially nice. For example, the hot spot shuts itself off 90 seconds after the last laptop disconnects. That’s hugely important, because these personal hot spot features are merciless battery drains.”

The review now simply states, “AT&T says its iPhone will get it soon” without mentioning a date. While the February 13 date falls oddly on a Sunday, making it an unlikely date for an iOS release, it appears that iOS 4.3 will at least be released around that day.